CN220421607U

CN220421607U - Controller, electric assembly, driving system and vehicle

Info

Publication number: CN220421607U
Application number: CN202321372245.8U
Authority: CN
Inventors: 喻凤传; 薛燕婵; 李卿
Original assignee: BYD Co Ltd
Current assignee: BYD Co Ltd
Priority date: 2023-05-31
Filing date: 2023-05-31
Publication date: 2024-01-30
Anticipated expiration: 2033-05-31

Abstract

The application discloses a controller, an electric assembly, a drive system and a vehicle. The controller includes a power module, a capacitive assembly, a first positioning member, and a conductive connection pad. The power module includes a first power module terminal connected to a first pole of the battery pack and a second power module terminal connected to a second pole of the battery pack, one of the first pole and the second pole being a positive pole of the battery pack and the other being a negative pole of the battery pack. The capacitive assembly includes a first capacitive terminal connected to the first power module terminal and a second capacitive terminal connected to the second power module terminal. The first positioning member is provided to the second power module terminal and/or the second capacitance terminal. One end of the conductive connecting sheet is connected with the second power module terminal, the other end of the conductive connecting sheet is connected with the second capacitor terminal, and the conductive connecting sheet comprises a second positioning part which is correspondingly arranged and connected with the first positioning part.

Description

Controller, electric assembly, driving system and vehicle

Technical Field

The application relates to the technical field of electric vehicles, in particular to a controller, an electric assembly, a driving system and a vehicle (electric vehicle).

Background

Existing drive systems for electric vehicles include a motor, a controller, and a battery pack. The controller is electrically connected to the motor and the battery pack to deliver power from the battery pack to the motor to cause the motor to drive the wheels.

Specifically, the controller includes a power module, and the anode and cathode of the battery pack are connected to the anode and cathode of the controller. The power module is internally provided with a three-phase bridge arm which is connected with one end of a three-phase winding of the motor, so that the battery pack supplies power for the motor through the power module. In the actual use process, the input end of the power module is filtered through capacitor voltage stabilization, so that the motor can be controlled to work better. In the existing vehicle, the power module terminal and the capacitor terminal are fixed through bolts, so that connection is not firm, and reliability is poor.

To this end, the present application provides a vehicle to at least partially solve one of the above-mentioned problems.

Disclosure of Invention

A series of concepts in simplified form are introduced in the use of the novel content section, which will be described in further detail in the detailed description section. The use of the novel content of this application is not meant to limit the critical features or essential features of the claimed subject matter, but is not meant to limit the scope of the claimed subject matter.

To at least partially solve the above-mentioned problems, a first aspect of the present application provides a controller comprising:

a power module, the power module comprising:

a first power module terminal for connecting a first pole of the battery pack, an

A second power module terminal for connecting a second pole of the battery pack, one of the first pole and the second pole being a positive pole of the battery pack, the other being a negative pole of the battery pack;

a capacitive assembly comprising:

a first capacitor terminal for connection with the first power module terminal, and

the second capacitor terminal is used for being connected with the second power module terminal;

a first positioning member provided to the second power module terminal and/or the second capacitance terminal; and

one end of the conductive connecting sheet is used for being connected with the second power module terminal, the other end of the conductive connecting sheet is used for being connected with the second capacitance terminal, the conductive connecting sheet comprises a second positioning component,

the first positioning component is used for being correspondingly arranged and connected with the second positioning component.

According to the application, the capacitor assembly is used for stabilizing and filtering the input signal of the power module, the second power module terminal is connected with the second capacitor terminal through the conductive connecting sheet, the length of the second power module terminal and the length of the second capacitor terminal can be reduced, and the product cost is reduced. The first positioning component and the second positioning component can keep stable relative positions of the two components to be connected before connection, so that welding operation is facilitated.

Optionally, one end of the conductive connecting piece is used for overlapping with the second power module terminal along an overlapping direction, the other end of the conductive connecting piece is used for overlapping with the second capacitor terminal along the overlapping direction, and the overlapping direction is perpendicular to a contact surface of the conductive connecting piece and the second power module terminal.

According to the application, the conductive connecting sheet is respectively connected with the second power module terminal and the second capacitor terminal in a lap joint mode, so that the contact area can be increased, firm connection is ensured, contact resistance is reduced, and the product performance is improved.

Optionally, one end of the conductive connecting piece is used for being welded with the second power module terminal, and the other end of the conductive connecting piece is used for being welded with the second capacitor terminal.

According to the application, the conductive connecting sheet is respectively connected with the second power module terminal and the second capacitor terminal in a welding way, so that firm connection can be ensured, and the product stability is improved.

Alternatively, the process may be carried out in a single-stage,

the first positioning member comprises at least two first positioning sub-members,

the second positioning member comprises at least two second positioning sub-members,

the second positioning sub-component is used for being correspondingly arranged and connected with the first positioning sub-component.

According to the application, the components to be welded are relatively fixed in at least two positions, so that the stable relative positions of the two components are kept

Alternatively, the process may be carried out in a single-stage,

one of the first positioning member and the second positioning member is provided as a projection,

the other of the first positioning component and the second positioning component is provided with a groove or a through hole for accommodating the lug.

According to the application, the first positioning component and the second positioning component are simple in structure and easy to realize.

Optionally, one end of the conductive connecting piece is connected with the second power module terminal by laser welding, and the other end of the conductive connecting piece is connected with the second capacitor terminal by laser welding.

According to the method, the welding mode is safe and high in precision.

Alternatively, the process may be carried out in a single-stage,

the power module comprises three-phase bridge arms, the midpoints of the bridge arms of each phase are respectively used for at least indirectly connecting with the first end of a phase winding of the motor,

the first power module terminal is connected to one end of the three-phase bridge arm, the second power module terminal is connected to the other end of the three-phase bridge arm,

the second power module terminals comprise three sub second power module terminals which are respectively connected to the other ends of the three-phase bridge arms, and the conductive connecting sheets and the three sub second power module terminals are overlapped and connected in a welding mode.

According to the power module, the three sub second power module terminals of the controller are connected in an equipotential manner through the conductive connecting sheet, so that the processing difficulty of the power module is reduced.

Optionally, the first power module terminal and the first capacitor terminal are overlapped and welded with each other along an overlapping direction, and the overlapping direction is perpendicular to the contact surface of the conductive connecting sheet and the second power module terminal.

According to the application, the first power module terminal and the first capacitor terminal are mutually overlapped and connected in a lap joint and welded mode, so that the contact area is increased, the connection is firm, and the contact resistance is reduced.

Alternatively, the process may be carried out in a single-stage,

the first power module terminal comprises three sub first power module terminals which are respectively connected to one ends of the three-phase bridge arms, and the first capacitor terminal and the three sub first power module terminals are all in stacked lap joint connection.

According to the power module, the three sub first power module terminals of the controller are connected in an equipotential manner through the first capacitor terminal, so that the processing difficulty of the power module is reduced.

Alternatively, the process may be carried out in a single-stage,

the first power module terminal and the first capacitor terminal are stacked along the overlapping direction and are staggered with each other along the staggered direction, wherein the overlapping direction is perpendicular to the staggered direction, the overlapping direction is a bidirectional direction and comprises a first overlapping direction and a second overlapping direction which are opposite to each other,

the first power module terminal is positioned at one side of the second power module terminal facing the first lapping direction and is spaced apart from the second power module terminal,

the first capacitor terminal is positioned on one side of the second capacitor terminal facing the first lapping direction and is spaced apart from the second capacitor terminal,

the conductive connecting sheet is overlapped and overlapped to the second power module terminal at one side of the second power module terminal facing the second overlapping direction, and is overlapped and overlapped to the second capacitor terminal at one side of the second capacitor terminal facing the second overlapping direction.

According to the application, the controller is compact in structure.

Optionally, a power module insulator is disposed between the first power module terminal and the second power module terminal, and the power module insulator is located between the first power module terminal and the second power module terminal along the lap joint direction.

According to the power module insulator, equipment safety can be improved.

Optionally, the power module insulator is made of a plastic material.

According to the power module insulator, the cost is low, and the performance is stable.

Optionally, the power module insulator is configured to bend toward the second overlap direction and beyond the second power module terminal in the second overlap direction,

the middle part of the conductive connecting sheet along the staggered direction is configured to be sunken towards the second lapping direction, and two sides of the conductive connecting sheet along the staggered direction are respectively lapped to the second power module terminal and the second capacitor terminal.

According to the application, the shape of the power module insulator is beneficial to further improving safety.

Optionally, a capacitive insulator is disposed between the first capacitive terminal and the second capacitive terminal, and the capacitive insulator is located between the first capacitive terminal and the second capacitive terminal along the lap joint direction.

According to the application, the capacitive insulator can improve equipment safety.

Optionally, the capacitive insulator is made of a plastic material.

According to the application, the capacitor insulator is low in cost and stable in performance.

Optionally, the capacitive insulator is configured to bend toward the second overlap direction and beyond the second capacitive terminal along the second overlap direction,

the middle part of the conductive connecting sheet along the staggered direction is configured to be sunken towards the second lapping direction, and two sides of the conductive connecting sheet along the staggered direction are respectively overlapped and lapped to the second power module terminal and the second capacitor terminal.

According to the application, the shape of the capacitive insulator is beneficial for further improving the safety.

A second aspect of the present application provides an electromotive assembly, comprising:

a motor comprising a three-phase winding; and

the controller according to any one of the above technical solutions,

wherein the midpoints of the legs of each phase are respectively connected at least indirectly to a first end of the winding of one phase of the motor.

According to the application, the capacitor assembly is used for stabilizing and filtering an input signal of the power module, the second power module terminal is connected with the second capacitor terminal through the conductive connecting sheet, the conductive connecting sheet is lapped and welded with the second power module terminal, the contact area can be increased, firm connection is ensured, contact resistance is reduced, and product performance is improved. The first positioning component and the second positioning component can keep stable relative positions of the two components to be welded before welding, so that welding operation is convenient.

A third aspect of the present application provides a drive system comprising:

a battery pack for supplying power; and

according to the electric assembly of the above technical scheme,

wherein one of the first power module terminal and the second power module terminal is at least indirectly connected to the positive electrode of the battery pack, and the other of the first power module terminal and the second power module terminal is at least indirectly connected to the negative electrode of the battery pack.

A fourth aspect of the present application provides a vehicle comprising the drive system according to the above-mentioned aspect, wherein the electric motor is connected to a wheel of the vehicle.

Drawings

In order that the advantages of the invention will be readily understood, a more particular description of the invention briefly described above will be rendered by reference to specific embodiments that are illustrated in the appended drawings. Understanding that these drawings depict only typical embodiments of the application and are not therefore to be considered to be limiting of its scope, the application will be described and explained with additional specificity and detail through the use of the accompanying drawings.

In the accompanying drawings:

FIG. 1 is a schematic perspective view of an electromotive assembly according to a preferred embodiment of the present application;

FIG. 2 is a schematic circuit diagram of a drive system according to a preferred embodiment of the present application;

FIG. 3 is an exploded schematic view of a portion of the components, first connection assembly and second connection assembly of the controller of the drive system according to the preferred embodiment of the present application;

FIG. 4 is a schematic top view of the electromotive assembly of FIG. 1, with the upper cover of the controller omitted;

FIG. 5 is a schematic illustration of a controller of a drive system coupled to a first coupling assembly according to a preferred embodiment of the present application;

fig. 6 is an exploded perspective view of the charging receptacle shown in fig. 3;

FIG. 7 is an exploded perspective view of the electromotive assembly of FIG. 1;

FIG. 8 is a schematic side cross-sectional view of a controller according to a preferred embodiment of the present application;

FIG. 9 is a schematic diagram of the composition of one specific example of an A-wire conductive assembly of the controller shown in FIG. 3;

FIG. 10 is a schematic diagram of the composition of another specific example of an A-wire conductive assembly of the controller shown in FIG. 3;

FIG. 11 is a schematic side cross-sectional view of the first contactor shown in FIG. 3;

FIG. 12 is a schematic diagram of the composition of the sub-positive conductive components of the controller shown in FIG. 3;

FIG. 13 is a schematic diagram of the composition of the sub-negative conductive assembly of the controller shown in FIG. 3;

FIG. 14 is a schematic diagram of a capacitive assembly and power module of a controller according to a preferred embodiment of the present application;

fig. 15 is a top perspective view of the capacitive assembly of fig. 14;

FIG. 16 is a bottom perspective view of the capacitive assembly of FIG. 14;

FIG. 17 is an exploded perspective view of the capacitive assembly of FIG. 14;

FIG. 18 is an enlarged partial schematic view of the connection between the capacitor assembly and the power module shown in FIG. 14;

fig. 19 is an exploded view showing the connection of the first connection assembly of the driving system shown in fig. 2 to the battery pack.

Reference numerals illustrate:

4: second connecting assembly

9: first connecting assembly

9A: first plug connector

9B: second plug connector

10 box body

32: a second opening

55: capacitor assembly

56: conductive connecting sheet

56A: overlap joint position

57: second positioning component

58: positive DC bus wiring terminal

58A: positive electrode direct current bus supporting position

59: a line support position

60: negative DC bus wiring terminal

60A: negative electrode direct current bus support position

62: first safety wiring terminal

63: second safety binding post

66: second safety output terminal

67: first capacitor positive electrode input terminal

68: capacitor negative electrode input terminal

70: negative electrode connection terminal

71: positive electrode connection terminal

72: second capacitor positive electrode input terminal

75: capacitor negative electrode output terminal

76: capacitor insulator

77: capacitor positive electrode output terminal

79: positive electrode binding post of power module

79A: positive electrode wiring terminal of sub-power module

80: power module insulator

81: negative electrode binding post of power module

81A: negative electrode wiring terminal of sub-power module

82: first positioning part

83: power module

84: three-phase wiring terminal

91: insulating member

92: second negative electrode conductive member

93: first magnetic ring

99: first wire holder

100: hall device

101: three-phase wiring terminal of first wiring seat

102: heat conducting piece

115: charging socket

117: third magnetic ring

116A: first magnetic ring base capacitor

116B: second magnetic ring base capacitor

122: first switching element/first contactor

123: third A-line conductive member

124: second switching element/second contactor

125: first positive electrode conductive member

126: first negative electrode conductive member

127: second positive electrode conductive member

128: third positive electrode conductive member

131: fourth A line conductive member

131A: first end of fourth A-line conductive member

131B: second end of fourth A-line conductive member

132: fixing seat

136: second A-wire conductive member

133: third insurance

134: first insurance

135: second insurance

142: motor A-line terminal

143: three-phase line terminal of motor

144: motor A line binding post

145: three-phase line connecting terminal of motor

146: motor wire holder

147: electric control three-phase line connecting terminal

148: electric control A line binding post

166: magnetic ring mounting groove

167: wire harness clamping part

168: first grounding terminal

169A: first capacitor mounting groove

169B: second capacitor mounting groove

169C: first groove side wall

169D: second groove side wall

170: charging positive electrode binding post

171: charging negative electrode binding post

172: second grounding terminal

173: first capacitor

174: second capacitor

176: first A-line conductive member

179: first capacitor core

181: second capacitor core

600: battery pack

609: battery pack socket

601: battery pack A line copper bar

602: copper bar of battery pack positive electrode bus

603: copper bar of battery pack negative bus

611: a-wire connecting terminal of battery pack

612: positive bus wiring terminal of battery pack

613: battery pack negative bus wiring terminal

621: contactor first contact

622: second contact of contactor

623A/623B: binding post

624: movable plate

625: spring

626: connecting shaft

627: spacing post

628: coil

629: magnet

700: motor with a motor housing

701: motor winding

800: controller for controlling a power supply

801: a line

803: three-phase bridge arm

804: upper bridge

805: lower bridge

806: second conductive component

807: positive DC bus

808: negative DC bus

809: first socket

810: first plug-in port

811: first A-wire binding post/plug connector A-wire binding post

812: second A-wire connecting terminal

813: a line wire section

821: first positive DC bus connection terminal/plug positive DC bus connection terminal

822: second positive DC bus wiring terminal

823: positive DC bus wire section

831: first negative DC bus connecting terminal/plug negative DC bus connecting terminal

832: second negative DC bus wiring terminal

833: negative DC bus wire segment

840: negative electrode conductive assembly

841: first end of negative electrode conductive component

842: second end of negative electrode conductive component

843: sub-negative electrode conductive assembly

844: first end of sub-negative electrode conductive component

845: second end of sub-negative electrode conductive component

850: positive electrode conductive assembly

851: first end of positive electrode conductive component

852: second end of positive electrode conductive component

853: sub-positive electrode conductive assembly

854: first end of sub-positive electrode conductive component

855: second end of sub-positive conductive component

860: a line conductive assembly

861: first end of A-wire conductive component

862: second end of A-wire conductive component

863: third end of A-line conductive component

865: additional positive electrode conductive component

866: first end of additional positive electrode conductive component

867: second end of additional positive electrode conductive component

870: electric assembly

880: power socket

881: insulating substrate

882: power socket

883: partition wall

884: power supply module

885: first side of socket

886: second side of socket

890: driving system

901: positive electrode conductive sheet of first capacitor

902: first capacitor positive electrode conductive sheet main body

903: second capacitor positive electrode conductive sheet

904: second capacitor positive electrode conductive sheet main body

905: capacitor negative electrode conducting strip

906: capacitor negative electrode conducting strip main body

911: insulating base

Detailed Description

In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present application. However, it will be apparent to one skilled in the art that the present application may be practiced without one or more of these details. In other instances, some features well known in the art have not been described in order to avoid obscuring the present application.

For a thorough understanding of the present application, a detailed description will be set forth in the following description. It should be appreciated that these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of these exemplary embodiments to those skilled in the art. It will be apparent that embodiments of the present application may be practiced without limitation to the specific details that are familiar to those skilled in the art. Preferred embodiments of the present application are described in detail below, however, the present application may have other embodiments in addition to these detailed descriptions.

Ordinal words such as "first" and "second" recited in this application are merely identifying and do not have any other meaning, e.g., a particular order, etc. Also, for example, the term "first component" does not itself connote the presence of "second component" and the term "second component" does not itself connote the presence of "first component". The use of the words "first," "second," and "third," etc. do not denote any order, and the words are to be interpreted as names.

It should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "inner", "outer" and the like are used herein for illustrative purposes only and are not limiting.

The present application provides a capacitive assembly for a controller, a magnetic ring seat assembly, a controller comprising the capacitive assembly and/or the magnetic ring seat assembly and at least for controlling a motor, an electric assembly comprising the controller, a drive system comprising the electric assembly and a vehicle comprising the drive system. It is understood that the vehicle according to the present application is an electric vehicle.

Exemplary embodiments according to the present application will now be described in more detail with reference to the accompanying drawings.

As shown in fig. 1, in a preferred embodiment, an electric assembly 870 according to the present application includes a controller 800 and a motor 700 according to the preferred embodiment of the present application. As shown in fig. 2, in a preferred embodiment, a drive system 890 according to the present application includes a battery pack 600 and an electric assembly 870 according to a preferred embodiment of the present application. Wherein the controller 800 is connected to a charging device (e.g., electric gun, distribution box) through a second connection assembly 4 (e.g., wire nose), and to the battery pack 600 through a first connection assembly 9 (e.g., wire nose).

The battery pack 600 is used for storing energy and supplying power (power battery), and the controller 800 is used for controlling the motor 700, and the motor 700 is connected to the wheels of the electric vehicle to drive the wheels to rotate. Wherein, the controller 800 is connected to the motor 700 and the battery pack 600, respectively, to transmit the electric power of the battery pack 600 to the motor 700.

In some embodiments, the controller 800 includes a housing 10. Meanwhile, the case 10 is provided with a plurality of openings or sockets (plug-in ports) for connection with the motor 700, the battery pack 600, the charging device, and the like through connection wires. For example, the case 10 is provided with a charging socket 115, and the second connection assembly 4 is inserted into the charging socket 115 to be connected with the charging device.

In some embodiments, the case 10 is provided with a first socket 810, and the first socket 810 is used to plug the first connection assembly 9, so as to connect with the charging pack 600.

Hereinafter, the operation of the drive system 890 will be briefly described with reference to fig. 2.

The motor 700 includes three-phase windings 701 (inductances).

The controller 800 includes a power module 83. In some embodiments, the power module 83 includes three-phase legs 803, each of which in turn includes an upper bridge 804 and a lower bridge 805. Each phase leg 803 comprises, for example, two power switching tubes in series, which in some embodiments may be IGBTs, forming an upper bridge 804 and a lower bridge 805, respectively. The first ends of the three-phase windings 701 are connected to the middle of the three-phase legs 803. The middle of the three-phase bridge arm 803 refers to an electrical position between two power switches, where the electrical position connects the upper bridge 804 and the lower bridge 805 at the same time, for example, connects the upper bridge 804 along one path direction and connects the lower bridge 805 along the other path direction, that is, a connection point of the upper bridge 804 and the lower bridge 805, and is not a midpoint position of the three-phase bridge arm 803.

In some embodiments, the battery pack 600 includes a first sub-battery pack and a second sub-battery pack (U1/U2) in series, denoted as a first sub-battery pack U1 and a second sub-battery pack U2, respectively. For example, the battery pack 600 includes a case in which the first and second sub-battery packs U1 and U2 are disposed. The negative electrode of the first sub-battery pack U1 is connected to the positive electrode of the second sub-battery pack U2, and the positive electrode of the first sub-battery pack U1 forms the positive electrode of the battery pack 600, that is, the direct current positive electrodes of the first sub-battery pack and the second sub-battery pack (the first sub-battery pack U1 and the second sub-battery pack U2) connected in series; the negative electrode of the second sub-battery pack U2 forms the negative electrode of the battery pack 600, i.e., the direct current negative electrodes of the first and second sub-battery packs (the first and second sub-battery packs U1 and U2) connected in series.

The a line 801 is connected between the second end of the at least one phase winding 701 and the first and second sub-battery packs U1 and U2, that is, the second end of the at least one phase winding 701 is connected between the first and second sub-battery packs U1 and U2 through the a line 801. In the present application, the a wire is a wire, and may be any one or a combination of a plurality of round wires, flat wires, cables, copper bars, and the like. Similarly, the middle of the first sub-battery pack U1 and the second sub-battery pack U2 refers to an electrical position between the first sub-battery pack U1 and the second sub-battery pack U2, which is simultaneously connected to the first sub-battery pack U1 and the second sub-battery pack U2, respectively, such as to the first sub-battery pack U1 (e.g., the negative electrode of U1) along one path direction and to the second sub-battery pack U2 (e.g., the positive electrode of U2) along the other path direction.

In some embodiments, the a-line 801 is connected between the second end of the three-phase winding 701 and the first and second sub-battery packs U1 and U2, that is, the second ends of the three-phase winding 701 are each connected to the middle of the first and second sub-battery packs U1 and U2 in series through the a-line 801.

As can be seen from fig. 2, the battery pack 600 includes a first sub-battery pack U1 and a second sub-battery pack U2. In the positive half period of the fundamental wave period, when the upper bridge 804 is on and the lower bridge 805 is off, the first sub-battery pack U1 discharges, and the three-phase winding 701 is charged through the upper bridge 804; when the lower bridge 805 is turned on and the upper bridge 804 is turned off, the three-phase winding 701 charges the second sub-battery pack U2, and then forms a loop through the lower bridge 805. In the negative half period of the fundamental wave period, when the lower bridge 805 is on and the upper bridge 804 is off, the second sub-battery pack U2 discharges to the three-phase winding 701, and a loop is formed through the lower bridge 804; when the upper bridge 804 is on and the lower bridge 805 is off, the three-phase winding 701 freewheels, and the first sub-battery pack U1 is charged through the upper bridge 804. The first sub-battery pack and the second sub-battery pack are mutually charged and discharged, so that the internal resistance of the battery generates heat to realize self-heating of the battery. Therefore, in this application, the a-line 801, also referred to as a heating a-line, extends from the second end of the winding 701 of the motor 600 all the way to the middle of the first and second sub-battery packs U1 and U2 of the battery pack 600.

In some embodiments, the controller 800 further comprises a first capacitor 173. The first capacitor 173 may be understood as a bus capacitor, where the positive electrode of the first capacitor 173 is connected to the positive dc bus 807 and the negative electrode of the first capacitor 173 is connected to the negative dc bus 808.

In some embodiments, the positive dc bus 807 and the negative dc bus 808 are commonly connected to a first filter, such as the first filter may be a magnetic loop 93, denoted as the first magnetic loop 93. In order to better mount the positive dc bus 807 and the negative dc bus 808, the positive dc bus 807 and the negative dc bus 808 may be provided to penetrate the first magnetic ring 93.

In some embodiments, the filter includes a first Y capacitance, a second Y capacitance, and a third Y capacitance. One end of the first Y capacitor is connected with the positive direct current bus 807, and the other end of the first Y capacitor is grounded; one end of the second Y capacitor is connected with the negative DC bus 808, the other end of the second Y capacitor is grounded, one end of the third Y capacitor is connected with the A line 801, and the other end of the third Y capacitor is grounded. These three Y capacitors may be provided in the case 10 of the controller 800, in the case of the battery pack 600, or in both places.

Referring to fig. 2, in charging the battery pack 600, the charging device is connected to the controller 800, and charges the battery pack 600 through the controller 800. When the charging voltage of the charging device is low (e.g., less than 750V, such as 470V), after the charging current enters the controller 800, in some embodiments, the charging negative electrode current flows through the negative electrode of the second connection assembly 4 and the negative electrode dc bus 808 to the negative electrode of the battery pack 600; the charged positive current passes through the first switching element 122 (e.g., the first contactor), the second a-wire conductor 136, the motor winding 701, the upper bridge 804 of the power module 83, and the positive dc bus 807 to the positive electrode of the battery pack 600. The charging method can improve the charging voltage and the charging efficiency.

It can be seen that the windings inside the motor 700 and part of the a line 801 are multiplexed during boost charging. In order to absorb the ripple current at the dc end and filter, in some embodiments, in order to better optimize the power module EMC during boost charging, a second capacitor 174 is provided, and the negative electrode of the second capacitor 174 and the negative electrode of the first capacitor 173 are both connected to the negative electrode of the charging device. The positive electrode of the charging device is connected to the second a-line conductive member 136, and is also connected to the positive electrode of the second capacitor 174, so that the positive electrode and the negative electrode of the dc charge are connected to the second capacitor 174. Thus, the battery pack is charged in a motor boosting mode to improve charging efficiency.

In some embodiments, the charging positive and negative leads are commonly connected to a second filter, e.g., the second filter may be a magnetic loop 117, denoted as a third magnetic loop 117. In order to better mount the charging positive and negative leads, the charging positive and negative leads are provided through the third magnet ring 117.

In some embodiments, to better optimize the EMC of the controller 800, the controller 800 further includes a third filter to which the charging positive wire and the charging negative wire are commonly connected, for example, the third filter may be a pair of Y capacitors 116, and the pair of Y capacitors 116 may be capable of better filtering out common mode interference.

When the charging voltage of the charging device is high (for example, up to 750V), the charging negative current flows to the battery pack in the same path after the charging current enters the controller 800. The charging positive current then flows to the first connection assembly 9 through the second switching element 124 (e.g., a second contactor). That is, boost charging is not required.

Accordingly, the controller 800 selects to turn on the first switching element 122 or the second switching element 124 by monitoring the charging voltage of the charging device so that the charging positive electrode current reaches the battery pack 600 through different paths. When the first switching element 122 is turned on and the second switching element 124 is turned off, a charging positive current flows through the motor winding 701, and the charging voltage is raised. When the first switching element 122 is turned off and the second switching element 124 is turned on, the charged positive current directly flows to the positive dc bus 807 of the battery pack 600, and no longer flows through the motor winding 701, and the charged voltage maintains the original voltage value.

The positive dc bus 807 and the negative dc bus 808 are also collectively referred to as dc buses.

In some embodiments, when the battery pack 600 supplies power to the motor 700, the dc current from the battery pack 600 flows into the first capacitor 173 after passing through the dc bus, the first connection assembly 9 and the first magnetic ring 93 in sequence, and then flows into the motor 700 through the ac hall 100 after being converted into ac by the power module 83 to drive the motor 700.

In some embodiments, the negative current passes through third fuse 133 before entering first capacitor 173. To protect the boost charge and self-heating circuit, positive current flows through the first fuse 134 when flowing from the first capacitor 173 to the dc bus.

In some embodiments, to enable the vehicle to be more conveniently charged, a power module 884 is further provided in the controller 800, and the power module 884 is connected to an external AC power source (e.g., mains, AC 220V) through the AC charging and discharging connector 3. In order to ensure safety, a second safety device 135 is further provided between the power module 884 and the first capacitor 173.

In this application, two electrical locations are "at least indirectly connected" meaning that they are directly connected by wires (direct equipotential connection) or indirectly connected by electronic components (equivalent to equipotential connection).

The specific shaped products will be described in detail in the following in the various examples.

As shown in fig. 3-5, in some embodiments, a line 801 is connected to a second end of at least one phase winding 701 of the motor 700 from the middle of the first and second sub-battery packs U1 and U2 without passing through the controller 800. For example, one end of the a-wire 801 is connected to the battery pack 600 after passing through the casing of the motor 700, so that the a-wire 801 corresponds to being provided outside the casing 10 of the controller 800. In this embodiment, the design of the a-line 801 is relatively simple. However, the portion a line from the case of the motor 700 to the case of the battery pack 600 needs to be covered, and the portion a line is long, and a plurality of fixing members need to be separately provided for fixing it. In addition, the high frequency interference of the power module 83 is conducted to the a-line 801 through the motor 700, thereby causing EMC problem of the whole driving system 890.

In some embodiments, for example, when the three-phase winding 701 of the motor 700 and the power module 83 of the controller 800 are required to be multiplexed to implement the boost charging function, when the a-line 801 does not pass through the controller 800, a second a-line connecting the second end of the at least one phase winding 701 of the motor 700 and the charging positive wire is also required to be provided in the controller 800, for example, the second a-line may be the second a-line conductive member 136.

To solve the EMC problem of the whole driving system 890, in some embodiments, the a-line 801 is partially disposed on the fourth filter, for example, the fourth filter is a magnetic ring and may be recorded as a fourth magnetic ring, where the fourth magnetic ring is located at a position that is beneficial for the a-line 801 to pass through, and the fourth magnetic ring plays a role of filtering, so as to reduce the EMC problem caused by the channel a-line 801. In some embodiments, a line 801 passes partially through the fourth magnetic loop alone.

To address the issue of requiring wrapping of the portion of the a-wire between the housing of the motor 700 and the housing of the battery pack 600, in some embodiments, the a-wire 801 is partially disposed within the housing 10 of the controller 800. This can be done so that only the portion a of the wire between the housing of the battery pack 600 and the case 10 of the controller 800 needs to be covered, and others may not need to be covered. Meanwhile, these embodiments also solve the problem that the portion a line from the casing of the motor 700 to the casing of the battery pack 600 is long and a plurality of fixing members are separately provided to fix.

In some embodiments, a-line 801 will be implemented by a plurality of interconnected, tangible conductive elements (e.g., wires, copper bars, etc.). In this application, as shown in fig. 3, for example, the a-line 801 located in the housing 10 of the controller 800 is illustrated as an a-line conductive assembly 860, for example, comprising the first a-line conductive member 176 and the second a-line conductive member 136; for example, the third a-wire conductive member 123 may be further included, and for example, the fourth a-wire conductive member 131 may be further included.

In some embodiments, a-line 801 may have multiple connections, or include multiple sections. In this application, a section of line A801 is denoted as the first line A. For example, in some embodiments, the first a line may be a section from the middle of the first and second sub-battery packs U1 and U2 in series to the controller 800 (with the second end connected to the middle of the first and second sub-battery packs in series, with the first end connected to the controller 800, such as a plug-in port connected to the housing 10 of the controller 800); alternatively, the first a line may be an a line inside the battery pack 600 (a first end thereof is connected to the case of the battery pack 600 and a second end thereof is connected to the middle of the first and second sub-battery packs U1 and U2); or the first a line may be a section from the battery pack 600 to the controller 800 (a first end of which is connected to a plug-in port on the case of the controller 800 and a second end of which is connected to a plug-in port on the case of the battery pack 600, similar to the first connection assembly 9).

During the heating process of the battery pack 600, the a line 801 forms a loop alternately with the positive dc bus 807 and the negative dc bus 808. Thus, in some embodiments, at least a portion of a line 801 is located between positive dc bus 807 and negative dc bus 808, so that a wiring harness may be conveniently provided. For example, at least a portion of the first a line is located between positive dc bus 807 and negative dc bus 808.

In some embodiments, the first a-line, the positive dc bus, and the negative dc bus have the same inductance. The inductances of the three wires are the same, so that the voltage balance between the wire A and the positive electrode of the battery pack and the voltage balance between the wire A and the negative electrode of the battery pack can be ensured, and the safety performance is improved. In some embodiments, the first filter is the first magnetic ring 93, and part of the positive dc bus 807, part of the negative dc bus 808, and part of the a line 801 are jointly threaded through the first magnetic ring 93 (jointly threaded through at least one magnetic ring), so that common mode interference can be suppressed, and the suppression effect on high-frequency noise is good. In some embodiments, a portion of the first a line and a portion of the dc bus are disposed through the first magnetic ring 93.

In some embodiments, the first magnetic ring 93 is disposed on at least one of the controller 800 and the battery pack 600. For example, the first magnetic ring 93 may be provided to the case 10 of the controller 800, or the first magnetic ring 93 may be provided to the case of the battery pack 600. In some embodiments, a third magnetic ring (not shown) may be further disposed in the housing of the battery pack 600 to optimize EMC of the battery pack. When the first a line and the dc bus need to pass through the box 10 of the controller 800, the first magnetic ring 93 is disposed in the box 10. When the first a-wire and dc bus need to pass through the housing of the battery pack 600, a first magnetic ring 93 is provided in the housing in some embodiments.

In some embodiments, only the positive dc bus connection terminal and the negative dc bus connection terminal are disposed on one side of the battery pack 600, while the a-wire connection terminal is not disposed on the same side as the positive dc bus connection terminal and the negative dc bus connection terminal, which results in that the a-wire connection terminal needs to be separately configured with a socket, resulting in increased cost.

In some embodiments, in the battery pack positive dc bus connection terminal, the battery pack negative dc bus connection terminal, and the battery pack a line connection terminal on the battery pack 600, the battery pack a line connection terminal is not disposed between the battery pack positive dc bus connection terminal and the battery pack negative dc bus connection terminal, which results in a large difference between a portion of a line in the battery pack 600 and a portion of the positive dc bus and a portion of the negative dc bus in the battery pack 600, and further results in a large common mode current between a portion of a line, a portion of the positive dc bus, and a portion of the negative dc bus in the battery pack 600, which further causes an unbalanced voltage between a line and the battery pack positive, and a line and the battery pack negative, and further brings a potential safety hazard to the whole driving system.

In some embodiments, referring to fig. 19, the battery pack 600 includes a battery pack receptacle 609. In order to solve the problem of the increased cost caused by the separate configuration of the socket for the a-wire connection terminal on one side of the battery pack 600, the battery pack socket 609 is internally provided with a battery pack a-wire connection terminal 611, a battery pack positive dc bus connection terminal 612 and a battery pack negative dc bus connection terminal 613. One end of the battery pack a wire connection terminal 611 is connected to the middle of the first sub-battery pack U1 and the second sub-battery pack U2 through the battery pack a wire copper bar 601, and the other end is connected to the second end of at least one phase winding of the motor 700. The battery pack positive dc bus connection 612 is connected to the positive pole of the battery pack 600 by a battery pack positive copper bar 602. The pack negative dc bus connection terminal 613 is connected to the negative electrode of the pack 600 through the pack negative copper bar 603. The battery pack a line connection 611 is disposed between the battery pack positive dc bus connection 612 and the battery pack negative dc bus connection 613.

As shown in fig. 3 to 5, in some embodiments, the a-wire connection terminal (denoted as a second a-wire connection terminal 812), the positive dc bus connection terminal (denoted as a second positive dc bus connection terminal 822), and the negative dc bus connection terminal (denoted as a second negative dc bus connection terminal 832) of the first connection assembly 9 for connecting to one side of the battery pack 600 are commonly disposed in the same second socket 9B. That is, the second plug 9B is used to connect the battery pack 600. For example, as shown in fig. 19, the second connector 9B is used to connect to the battery pack connector 609. Alternatively, the battery pack receptacle 609 is used to allow the second connector 9B to be inserted. It will be appreciated that the second a-wire connection 812 is configured to connect with the battery pack a-wire connection 611, the second positive dc bus connection 822 is configured to connect with the battery pack positive dc bus connection 612, and the second negative dc bus connection 832 is configured to connect with the battery pack negative dc bus connection 613.

As shown in fig. 3-5, to solve the problem of unbalanced voltage between the a-line and the positive pole of the battery pack, and between the a-line and the negative pole of the battery pack, in some embodiments, the second a-line connection 812 is disposed between the second positive dc bus connection 822 and the second negative dc bus connection 832; in some embodiments, the second a-wire connection 812, the second positive dc bus connection 822, and the second negative dc bus connection 832 are at least partially coincident in a direction perpendicular to the direction in which the second a-wire connection 812, the second positive dc bus connection 822, and the second negative dc bus connection 832 extend.

As shown in fig. 3 to 5, in some embodiments, the case 10 of the controller 800 is provided with a first socket 810, and the first socket 810 is used for one end of the first connection assembly 9, and the other end of the first connection assembly 9 is adapted to be connected to the battery pack 600, so that the controller 800 is connected to the battery pack 600. Since line a 801 extends from motor 700 through controller 800 all the way to the middle of the series of first and second sub-battery packs of battery pack 600. In some embodiments, the first connection assembly 9 preferably includes a line a wire segment 813 corresponding to the first line a, a positive dc bus wire segment 823 corresponding to the positive dc bus 807, and a negative dc bus wire segment 833 corresponding to the negative dc bus 808.

In some embodiments, a first end of the a-wire lead segment 813 is connected at least indirectly to the controller 800, and a second end of the a-wire lead segment 813 is connected at least indirectly to the middle of the first and second sub-battery packs U1 and U2 in series. The first end of the positive dc bus line segment 823 is at least indirectly connected to the controller 800, and the second end of the positive dc bus line segment 823 is at least indirectly connected to the positive electrode (positive dc bus 807) of the battery pack 600. The first end of the negative dc bus line segment 833 is at least indirectly connected to the controller 800, and the second end of the negative dc bus line segment 833 is at least indirectly connected to the negative (negative dc bus 808) of the battery pack 600.

In some embodiments, a first end of the a-wire conductor segment 813 is connected to the first a-wire connection terminal 811. The first a-wire connection terminal 811 is connected to the controller 800. I.e., both ends of the first a-wire connection terminal 811 are connected to the controller 800 and the first end of the a-wire lead section 813, respectively. In some embodiments, the controller 800 is provided with an a-wire support location 59 for removable connection with a first end of the a-wire segment 813 at least indirectly. The first interface 810 is used to directly or indirectly insert a first end of the a-wire segment 813. In some embodiments, the first a-wire connection terminal 811 is removably mounted directly to the a-wire support location 59 after insertion into the first socket 810. Thus, the first interface 810 is configured to allow the a-wire conductor segment 813 to be inserted through the first a-wire connection 811, the first a-wire connection 811 being detachably connected to the a-wire support location 59. A second end of the a-wire lead section 813 is connected to a second a-wire connection terminal 812 (battery pack a-wire connection terminal), and is connected to the middle of the first and second sub-battery packs U1 and U2 connected in series through the second a-wire connection terminal 812. It will be appreciated that the first a-wire connection 811, the a-wire conductor section 813 and the second a-wire connection 812 form a section of the a-wire 801, i.e. form a first a-wire. In the controller 800, all electrical parts connected to the a-line support 59 by equipotential are electrical parts on the a-line 801.

In some embodiments, a first end of positive dc bus line segment 823 is connected to first positive dc bus connection terminal 821. The first positive dc bus connection terminal 821 is connected to the controller 800. That is, both ends of the first positive dc bus connection terminal 821 are connected to the first ends of the controller 800 and the positive dc bus line segment 823, respectively. In some embodiments, the controller 800 is provided with a positive dc bus support 58A for removably connecting, at least indirectly, with a first end of the positive dc bus wire segment 82). The positive dc bus connection terminal 58 is provided at the position of the positive dc bus support 58A. After the first positive dc bus connection terminal 821 is inserted into the first socket 810, the positive dc bus connection terminal 58 is directly detachably connected. The second end of the positive dc bus line segment 823 is connected to a second positive dc bus terminal 822 (battery pack positive dc bus terminal), and is at least indirectly connected to the positive electrode of the battery pack 600 through the second positive dc bus terminal 822. It will be appreciated that the first positive dc bus connection 821, the positive dc bus line segment 823, and the second positive dc bus connection 822 form at least a portion of the positive dc bus 807. The positive dc bus connection terminal 58 is a positive dc bus terminal of the controller 800, and is used for connecting the positive dc bus 807, i.e., the positive electrode of the battery pack 600.

In some embodiments, a first end of negative dc bus wire segment 833 is connected to first negative dc bus connection 831. The first negative dc bus connection 831 is connected to the controller 800. That is, both ends of the first negative dc bus connection terminal 831 are connected to the first ends of the controller 800 and the negative dc bus line segment 833, respectively. For example, the controller 800 is provided with a negative dc bus support 60A for at least indirectly detachably connecting with a first end of a negative dc bus wire segment 833. The negative dc bus connection terminal 60 is provided at the position of the negative dc bus support 60A. After the first negative dc bus connection 831 is inserted into the first socket 810, the negative dc bus connection 60 is directly detachably connected. The second end of the negative dc bus line segment 833 is connected to a second negative dc bus terminal 832 (battery pack negative dc bus terminal), and is at least indirectly connected to the negative of the battery pack 600 through the second negative dc bus terminal 832. It will be appreciated that the first negative dc bus connection 831, the negative dc bus line segment 833, and the second negative dc bus connection 832 form at least a portion of the negative dc bus 808. The negative dc bus connection terminal 60 is a negative dc bus terminal of the controller 800, and is used for connecting to a negative dc bus 808, that is, a negative electrode of the battery pack 600.

In some embodiments, the first a-wire connection terminal 811, the first positive dc bus connection terminal 821 and the first negative dc bus connection terminal 831 are located at one end of the first connection assembly 9 for connection to the controller 800; the second a-wire connection terminal 812, the second positive dc bus connection terminal 822, and the second negative dc bus connection terminal 832 are located at one end of the first connection assembly 9 for connecting the battery pack 600.

In some embodiments, the first a-line connection 811 is located between the first positive dc bus connection 821 and the first negative dc bus connection 831. In some embodiments, a-line wire segment 813 is disposed between positive dc bus wire segment 823 and negative dc bus wire segment 833. In some embodiments, the first socket 810 is provided on the first socket 809, and the first socket 809 is provided to the case 10. The first magnetic ring 93 surrounds the socket 810 at the outer periphery of the first socket 810.

In some embodiments, one end of the first connection assembly 9 for connecting to the controller 800 forms a first plug 9A, and the plug 9A is inserted into the plug 810 and the first magnetic ring 93. Thus, the first a-wire connection 811 and the first positive dc bus connection 821 and the first negative dc bus connection 831 pass jointly through the socket 810 and the first magnetic ring 93, i.e. the first a-wire and the dc bus pass jointly through the socket 810 and the first magnetic ring 93, i.e. the a-wire 801 and the dc bus pass jointly through the first magnetic ring 93. In some embodiments, the first a-wire connection 811, the first positive dc bus connection 821 and the first negative dc bus connection 831 pass through the socket 810 and the first magnetic ring 93 in parallel with each other.

The first a-wire connection 811 can be understood as a plug a-wire connection of the plug 9A. The first positive dc bus connection 821 can be understood as a plug dc bus positive connection of the plug 9A. The first negative dc bus connection 831 can be understood as a plug dc bus negative connection of the plug 9A. The first positive dc bus connection terminal 821 may be understood as one end of the dc bus for connection to the controller 800. Therefore, one end of the first a line and the dc bus for connecting the controller 800 is fixed in the plug 9A.

It can be appreciated that a socket may be disposed on the housing of the battery pack 600, where the socket is provided with a socket, and a second magnetic ring is disposed on the periphery of the socket, and the socket formed by the second a-wire connection terminal 812, the second positive dc bus connection terminal 822, and the second negative dc bus connection terminal 832 penetrates through the second magnetic ring, so as to form a situation similar to the situation that the socket 9A is inserted into the socket 810. That is, the second positive dc bus connection 822, the second a-wire connection 812, and the second negative dc bus connection 832 pass through the second magnetic loop in common. The second a-wire connection 812 is located between the second positive dc bus connection 822 and the second negative dc bus connection 832. The second a-wire connection terminal 812 is disposed in parallel with the second positive dc bus connection terminal 822 and the second negative dc bus connection terminal 832.

The present application may also be configured such that the a-wire segment 813, the positive dc bus wire segment 823, and the negative dc bus wire segment 833 commonly pass through a magnetic ring.

In some embodiments, the lengths of the a-wire segment 813, the positive dc bus wire segment 823, and the negative dc bus wire segment 833 are substantially the same or the same. For example, the a-wire lead 813, the positive dc bus lead 823, and the negative dc bus lead 833 have the same length between the first connector 9A and the second connector 9B. In some embodiments, the wire diameters of the a-wire segment 813, the positive dc bus wire segment 823, and the negative dc bus wire segment 833 are substantially the same or the same. This is advantageous in that the inductance of the a-wire segment 813, the positive dc bus wire segment 823, and the negative dc bus wire segment 833 is identical.

The a-wire conductive assembly 860 is provided in the case 10 so that the controller 800 can be adapted to both a vehicle having a battery pack self-heating function and a vehicle not having a battery pack self-heating function.

In some embodiments, where the vehicle has a battery pack self-heating function, the a-wire 801 extends from the second end of the motor winding 701 all the way between the first and second sub-battery packs U1, U2, such that the a-wire conductive assembly second end 862 is at least indirectly connected to the second end of the at least one phase winding 701 and the a-wire conductive assembly first end 861 is at least indirectly connected between the first and second sub-battery packs in series. That is, when the a-wire conductive element second end 862 is at least indirectly connected to the second end of the at least one phase winding 701, the a-wire conductive element first end 861 is at least indirectly connected to the middle of the first and second sub-battery packs in series; alternatively, the a-wire conductive element second end 862 is connected at least indirectly to the second end of the at least one phase winding 701 when the a-wire conductive element first end 861 is connected at least indirectly between the first sub-battery pack and the second sub-battery pack of the series.

In some embodiments, the vehicle does not have a battery pack self-heating function, and both ends of the a-wire conductive assembly 860 of the controller 800 are no longer connected to the battery pack 600 and the motor 700. That is, the a-wire conductive assembly second end 862 is not connected to the motor 700 and the a-wire conductive assembly first end 861 is not connected to the middle of the first and second sub-battery packs in series. Alternatively, when the a-wire conductive member second end 862 is not connected to the motor 700, the a-wire conductive member first end 861 is also not connected to the battery pack 600. Alternatively, when the a-wire conductive member first end 861 is not connected to the battery pack 600, the a-wire conductive member second end 862 is not connected to the motor 700.

The following continues with the description of the controller 800, and the embodiments of how the controller 800 is connected to the charging device.

As previously described, the controller 800 is connected to the charging device through the second connection assembly 4. In some embodiments, as shown in fig. 3 and 6, the case 10 of the controller 800 is provided with a charging socket 115, and the plug of the second connection assembly 4 is inserted into a power outlet 882 (charging interface) of the charging socket 115. The charging receptacle 115 includes a charging positive terminal 170 and a charging negative terminal 171.

As shown in fig. 6, in the present application, the charging receptacle 115 is also referred to as a magnet ring receptacle assembly 115. In some embodiments, the charging dock 115 includes an insulating substrate 881, a first capacitor mounting slot 169A, and a first magnetic ring capacitor 116A. In some embodiments, the first capacitor mounting slot 169A is configured to receive the first magnetic collar cap 116A. The first magnet ring seat capacitor 116A preferably has a rectangular parallelepiped shape. It will be appreciated that the first magnetic pedestal capacitor 116A has at least three first capacitor sidewalls. The first capacitor mounting groove 169A has at least three first groove side walls 169C, and the three first groove side walls 169C and the three first capacitor side walls are non-detachably connected in one-to-one correspondence. For example, the side walls of the first magnetic ring seat capacitor 116A are correspondingly adhered to the side walls 169C of the three first grooves, so that the first magnetic ring seat capacitor 116A is firmly installed on the magnetic ring seat assembly.

As shown in fig. 6, in some embodiments, the magnet ring mount assembly 115 further includes an electrical outlet 880.

As shown in fig. 6, in some embodiments, the magnet ring mount assembly 115 further includes a third magnet ring 117.

As shown in fig. 6, in some embodiments, the magnet ring holder assembly 115 further includes a second magnet ring holder capacitor 116B.

As shown in fig. 6, in some embodiments, the substrate 881 is provided with a positive terminal 170 for connecting a positive electrode of a charging power source, a negative terminal 171 for connecting a negative electrode of the charging power source, and a ground terminal for connecting a ground wire. The ground terminals include a first ground terminal 168 and a second ground terminal 172 that are shorted to each other.

As shown in fig. 6, in some embodiments an electrical outlet 880 is provided to the base plate 881 for connecting (receiving) an external power plug (i.e., a plug of a charging device). The power outlet 880 includes a power outlet 882 and a magnet ring mounting slot 166. The power outlet 882 is for receiving an external power plug. The power outlet 882 extends through the power outlet 880 in a first direction D1. The power outlet 880 includes an outlet first side 885 and an outlet second side 886 disposed opposite the first direction D1, and an external power plug is used to plug into the power outlet 882 from the outlet second side 886. That is, the receptacle second side 886 is the outside for facing the external device, and the receptacle first side 885 is the inside. In some embodiments, the magnetic ring mounting groove 166 is disposed within the power receptacle 880 and surrounds the power receptacle 882 at the outer periphery of the power receptacle 882. In some embodiments, an outer surface of the magnet ring mounting groove 166 is connected to the base plate 881. In some embodiments, the base 881 and the power receptacle 880 may be integrally formed, such as by injection molding, at one time. In some embodiments, the base 881 is parallel to the axis of the power socket 882 (i.e., the first direction D1). On the side of the magnet ring holder assembly 115 for facing an external power plug, the end face of the power socket 882 is flush with the end face of the base 881, or the end face of the power socket 882 protrudes from the end face of the base 881. That is, the socket second side 886 is flush with the end face of the substrate 881 along the first direction D1, or the socket second side 886 protrudes from the substrate 881 along the first direction D1.

As shown in fig. 6, in some embodiments, the third magnetic ring 117 is disposed in the magnetic ring mounting groove 166, e.g., glued in the magnetic ring mounting groove 166.

As shown in fig. 6, in some embodiments, the substrate 881 is also provided with a second capacitive mounting slot 169B. The second capacitor mounting groove 169B is configured to receive the second magnetic ring seat capacitor 116B. The second magnetic ring seat capacitor 116B preferably has a rectangular parallelepiped shape. It is understood that the second magnetic pedestal capacitor 116B has at least three second capacitor sidewalls. The second capacitor mounting groove 169B has at least three second groove side walls 169D, and three second groove side walls 169C and three second capacitor side walls are non-detachably connected in one-to-one correspondence. For example, the sidewalls of the second magnetic ring seat capacitor 116B are bonded to the three second slot sidewalls 169D. In some embodiments, the first and second capacitive mounting grooves 169A, 169B are symmetrically disposed about the axis of the power socket 880 such that the first and second magnetic collar seat capacitances 116A, 116B are symmetrically disposed about the axis of the power socket 882.

As shown in fig. 6, in some embodiments, the first magnet ring seat capacitor 116A may also be non-detachably connected to the substrate 881, e.g., bonded to the substrate 881. The first capacitor pin of the first magnet ring seat capacitor 116A is electrically connected to the positive terminal 170, and the second capacitor pin is electrically connected to a ground terminal, such as the first ground terminal 168. The second magnet ring seat capacitor 116B may also be non-detachably connected to the substrate 881, for example, bonded to the substrate 881. The first capacitor pin of the second magnet ring seat capacitor 116B is electrically connected to the negative terminal 171, and the second capacitor pin is electrically connected to a ground terminal, such as the second ground terminal 172. The first magnet ring seat capacitor 116A and the second magnet ring seat capacitor 116B may be configured as Y capacitors. In some embodiments, the length direction of the first magnetic collar capacitance 116A is parallel to the axial direction of the power socket 882 (i.e., the first direction D1) and/or the length direction of the second magnetic collar capacitance 116B is parallel to the axial direction of the power socket 882.

As shown in fig. 6, in some embodiments, the bottom wall of the magnet ring mounting slot 166 is disposed on the receptacle first side 885, i.e., the magnet ring mounting slot 166 is not a through slot extending in the first direction D1, which has a blind end on the receptacle first side 885. In some embodiments, the first magnet ring seat capacitor 116A and the second magnet ring seat capacitor 116B are each disposed adjacent to the socket first side 885. In some embodiments, the sidewall of the first magnetic ring seat capacitor 116A is abutted with the socket first side 885, and the sidewall of the second magnetic ring seat capacitor 116B is also abutted with the socket first side 885, so that the peripheries of the first magnetic ring seat capacitor 116A and the second magnetic ring seat capacitor 116B are limited, so that the first magnetic ring seat capacitor 116A and the second magnetic ring seat capacitor 116B are firmly installed.

As shown in fig. 6, in some embodiments, the positive terminal 170 and the negative terminal 171 are also symmetrically disposed about the axis of the power socket 882, and the first ground terminal 168 and the second ground terminal 172 are also symmetrically disposed about the axis of the power socket 882, such that the magnet ring mount assembly 115 as a whole has a symmetrical structure. For example, the positive terminal 170 and the first ground terminal 168 are respectively located at two sides of the first capacitor mounting groove 169A (i.e., the first magnetic ring seat capacitor 116A), and the negative terminal 171 and the second ground terminal 172 are respectively located at two sides of the second capacitor mounting groove 169B (i.e., the second magnetic ring seat capacitor 116B).

As shown in fig. 6, in some embodiments, the magnet ring mount assembly 115 further includes a dividing wall 883. A partition wall 883 is provided at the base plate 881 and protrudes from the base plate 881. The partition wall 883 is located on the same side of the substrate 881 as the power outlet 880. A partition wall 883 extends in the axial direction of the power outlet 882 for separating the positive and negative poles of the external power plug. The positive electrode terminal 170 and the negative electrode terminal 171 are located on both sides of the partition wall 883, respectively. The partition wall 883 corresponds to a position provided on the symmetry axis of the magnet ring holder assembly 115. It will be appreciated that the divider 883 is made of an insulating material. In some embodiments, the dividing wall 883 is integrally formed with the base 881. In some embodiments, the dividing wall 883, the base 881, and the receptacle 880 are integrally formed.

As shown in fig. 6, in some embodiments, the magnet ring mount assembly 115 further includes at least one harness clip portion 167, the harness clip portion 167 being disposed on an outer surface of the magnet ring mounting groove 166 for capturing a harness.

Because the capacitor 116A, the capacitor 116B and the magnetic ring 117 are all adhered and mounted, the magnetic ring seat assembly 115 becomes an integrated charging socket, which is beneficial to automatic production.

The magnet ring mount assembly 115 is configured to be mounted to the case 10, for example, the base plate 881 is connected to the case 10, thereby exposing the power outlet 882 from the case 10 such that the second connection assembly 4 can be inserted into the power outlet 882 to enable connection of the controller 100 to the charging apparatus. In some embodiments, when the drive system 890 is installed in a vehicle, the axis of the power socket 882 is parallel to the axis of the wheel so that the plug of the charging device is inserted from the side wall of the vehicle (one side of the door).

In some embodiments, the first socket 809 and the magnetic collar assembly 115 are provided on the same side wall of the housing 10, i.e. the first connection assembly 9 and the second connection assembly 4 are connected to the same side of the housing 10.

Some embodiments of the controller 800 and its connection to the motor 700 will be described further below.

As shown in fig. 3, the controller 800 is provided with a first wire holder 99, and as shown in fig. 7, the motor 700 is provided with a motor wire holder 146, and the first wire holder 99 is used for being connected with the motor wire holder 146, thereby realizing connection of the controller 800 and the motor 700.

In some embodiments, the connection of the controller 800 to the motor 700 includes connection of the a-wire 801 and connection of the first end of the three-phase winding 701, i.e., the controller 800 is connected to the first and second ends of the three-phase winding 701, respectively.

In some embodiments, as shown in fig. 7, motor mount 146 includes motor a-wire terminal 144, electronically controlled a-wire terminal 148, motor three-phase wire terminal 145, and electronically controlled three-phase wire terminal 147. Inside the motor 700, the second ends of the three-phase windings 701 are first collected inside the motor 700 and then connected to the motor a-terminal 142. The motor a-wire terminal 142 is connected to a motor a-wire terminal 144 of a motor mount 146. Inside the motor mount 146, the motor a-wire connection 144 is connected to an electrical control a-wire connection 148. A first end of the three-phase winding 701 is connected to a motor three-phase wire terminal 143, and the motor three-phase wire terminal 143 is connected to a motor three-phase wire terminal 145 of the motor socket 146. The motor three-phase wire connection terminal 145 of the motor connection base 146 is correspondingly connected with the electric control three-phase wire connection terminal 147 of the motor connection base 146.

As shown in fig. 3, the first wire holder 99 is provided with a first wire holder three-phase wire connection terminal 101. The electrically controlled three-phase wire connection terminal 147 is used for connecting the first wire holder three-phase wire connection terminal 101. The electrically controlled a-wire terminal 148 is then connected to a second end 862 of the a-wire 801 (see fig. 3) of the a-wire conductive element 860 of the controller 800. The second end 862 of the a-wire conductive element is disposed to the first wire holder 99 such that the first wire holder 99 supports the second end 862 of the a-wire conductive element. Meanwhile, the first connection terminal 101 and the second end 862 of the a-wire conductive component are close to each other, so that connection with the corresponding terminal of the motor 700 is facilitated.

As shown in fig. 8, the case 10 is provided with a second opening 32, and the second opening 32 is disposed adjacent to the first wire holder 99, for connecting the first wire holder three-phase connection terminal 101 and the second end 862 of the a-wire conductive member to the motor 700. For example, the motor mount 146 may be directly connected to the terminals at the first mount 99 from the second opening 32 into the interior of the case 10.

The second opening 32 is adapted for direct or indirect passage of the a-wire conductive assembly second end 862 therethrough for connection to the motor 700. In this application, the second end 862 of the a-wire conductive element passes indirectly through the second opening 32, meaning that current flowing through the second end 862 of the a-wire conductive element passes through the second opening 32.

In some embodiments, first wire mount three-phase terminal 101 and a-wire conductive assembly second end 862 are disposed side-by-side (see fig. 4), and electrically controlled three-phase terminal 147 and electrically controlled a-wire terminal 148 are disposed side-by-side.

Some embodiments of the controller 800, and in particular the relationship between the controller 800 and the a-line 801, are described further below.

As shown in fig. 3, the controller 800 includes a power module 83 and an a-wire conductive assembly 860. The power module 83 and the a-wire conductive assembly 860 are disposed in the case 10. The a-wire conductive assembly 860 is also part of the a-wire 801 in the controller 800.

As shown in fig. 3 and 9, the a-wire conductive assembly 860 includes an a-wire conductive assembly first end 861 and an a-wire conductive assembly second end 862. The a-wire conductive assembly first end 861 is configured to be at least indirectly connected to the middle of the series connection of the first and second sub-battery packs U1 and U2 within the battery pack 600. The a-wire conductive assembly second end 862 is for at least indirect connection to a second end of the at least one phase winding 701 of the motor 700. In some embodiments, a-wire conductive assembly second end 862 is for at least indirect connection to a second end of three-phase winding 701 of motor 700.

It will be appreciated that the first interface 810 is configured to pass directly or indirectly through the first end 861 of the a-wire conductive assembly to connect with the battery pack 600. In the present application, the first end 861 of the a-wire conductive element indirectly passes through the first interface 810, which means that the current flowing through the first end 861 of the a-wire conductive element passes through the first interface 810.

In some embodiments, the a-wire conductive assembly includes a first a-wire conductive member 176 and a second a-wire conductive member 136. The first a-wire conductive member 176 has a first a-wire conductive member first end 176A and a first a-wire conductive member second end 176B, the first a-wire conductive member first end 176A being an a-wire conductive assembly first end 861. The second a-wire conductive member 136 has a second a-wire conductive member first end 136A and a second a-wire conductive member second end 136B, the second a-wire conductive member first end 136A being connected to the first a-wire conductive member second end 176B, the second a-wire conductive member second end 136B being an a-wire conductive member second end 862. In some embodiments, the first a-wire conductive member second end 176B is connected to the second a-wire conductive member first end 136A via the anchor 132. The fixing base 132 generally adopts an insulating member for supporting the first a-wire conductive member 176 and the second a-wire conductive member 136, so as to reduce the shake of the first a-wire conductive member and the second a-wire conductive member in the controller box 10, and improve the reliability of the controller 800.

Specifically, as shown in fig. 3, as previously described, the controller 800 is provided with the a-wire support position 59, the a-wire support position 59 being for at least indirectly connecting to the middle of the first and second sub-battery packs U1 and U2 in series within the battery pack 600 through the connection member. For example, the first a-wire conductive member first end 176A is fixedly mounted to the a-wire support location 59, i.e., the a-wire conductive member first end 861 is fixed to the a-wire support location 59 and is connected to the first a-wire connection terminal 811 so as to be connected to the middle of the first and second sub-battery packs U1 and U2 through the a-wire of the first connection member 9.

As can be seen in connection with fig. 2, the controller 800 is connected to a first end of the three-phase winding 701 of the motor 700, and is also connected to a second end of the three-phase winding 701 (i.e., the end point of the a-wire within the motor). The second end 136B of the second a-wire conductive member is connected to the first a-wire terminal 802 of the first wire holder 99, thereby connecting the second end of the winding 701.

Thus, the drive system 890 enables connection of the a-line from the motor 700 to the battery pack 600 through the controller 800.

In some embodiments, the a-wire conductive assembly 860 further includes an a-wire conductive assembly third end 863, the a-wire conductive assembly third end 863 being at least indirectly connected to the charging positive terminal 170. For example, the a-wire conductive assembly 860 further includes a third a-wire conductive member 123, wherein the third a-wire conductive member 123 is configured to communicate the second a-wire conductive member 136 with the charging positive wire, and in this embodiment, is primarily used for boost charging. The design can reuse the second A-wire conductive piece 136, reduce partial copper bars, enable the controller 800 to be more integrated, and save cost.

In some embodiments, as shown in fig. 9, the third a-wire conductive member 123 has a third a-wire conductive member first end 123A and a third a-wire conductive member second end 123B. The first a-wire conductive member 176 further includes a first a-wire conductive member third end 176C. The first a-wire conductive member third end 176C is preferably disposed proximate the first a-wire conductive member second end 176B. The third a-wire conductor first end 123A is connected to the first a-wire conductor third end 176C. The third a-wire conductive member second end 123B is the a-wire conductive member third end 863. In some embodiments, the a-wire conductive assembly 860 further includes a fourth a-wire conductive member 131. The fourth a-wire conductive member 131 includes a fourth a-wire conductive member first end 131A and a fourth a-wire conductive member second end 131B. Both ends of the fourth a-wire conductive member 131 are connected to the first a-wire conductive member third end 176C and the third a-wire conductive member first end 123A, respectively.

In other embodiments, as shown in fig. 10, the third a-wire conductor first end 123A is connected to the second a-wire conductor first end 136A. The two ends of the fourth a-wire conductive member 131 are respectively connected to the second a-wire conductive member first end 136A and the third a-wire conductive member first end 123A, so that the third a-wire conductive member first end 123A is connected to the second a-wire conductive member first end 136A.

In some embodiments, the first switching element 122 is disposed in the case 10, and a second end of the first switching element 122 is connected to the second end 123B of the third a-wire conductive member. A second end of the first switching element 122 is connected to the charging positive terminal 170. Accordingly, the a-wire conductive member third end 863 is connected to the charging positive terminal 170 through the first switching element 122.

In some embodiments, the first a-wire conductive member 176, the second a-wire conductive member 136, the third a-wire conductive member 123, and the fourth a-wire conductive member 131 are each configured as a copper bar, the four being connected in an equipotential manner. It is understood that the fixing base 132 is also connected with four equipotential.

As shown in fig. 3, in some embodiments, the controller 800 further includes the capacitor assembly 55, where the capacitor assembly 55 includes an insulating base 911, and the insulating base 911 is provided with the a-line support 59, and the a-line support 59 is disposed adjacent to the first socket 810, so that a separate a-line support can be omitted, which makes the controller 800 more integrated and also saves costs.

In some embodiments, the first a-wire conductor first end 176A is removably attached to the a-wire support location 59. The a-wire conductive assembly 860 spans a larger distance within the housing 10, and in some embodiments, the a-wire conductive assembly 860 is at least partially disposed within the capacitive shell of the capacitive assembly 55. The capacitor shell has insulating properties. Thus, the capacitor assembly 55 can support the a-wire conductive assembly 860, reduce the insulation support of the a-wire conductive assembly 860, further improve the integration of the controller 800, and further save costs.

In some embodiments, the first a-wire conductive member 176 is positioned against the capacitor shell of the capacitor assembly 55. Because the a line 801 can be used for self-heating of the battery pack 600 and boost charging of the battery pack 600, in the self-heating process, the current passing through the a line 801 can reach 500A, and larger heat can be generated, that is, the first a line conductive member 176 can pass through larger current, so that larger heat can be generated, and if heat cannot be dissipated in time, the capacitor assembly can be greatly influenced, and even the capacitor assembly 55 explodes.

In order to solve the problem that the reliability of the capacitor assembly 55 is low due to the first a-wire conductive member 176 being disposed on the capacitor assembly 55, the heat conductive member 102 is further disposed in the case 10. The heat conductive member 102 is disposed between the first a-wire conductive member 176 and the inner wall of the case 10 of the controller 800. The heat conductive member 102 is configured as, for example, a heat conductive paste. The box 10 of the controller 800 is generally made of metal, and the metal has good heat conduction effect, so that the heat generated by the first a-wire conductive member 176 can be better led out of the box 10 in time.

In some embodiments, the controller 800 further includes an insulator 91. The insulating member 91 is provided between the heat conductive member 102 and the inner wall of the case 10, and insulates the first a-wire conductive member 176 from the case 10 made of metal.

In some embodiments, as shown in fig. 8, the upper surface of the insulating member 91 contacts the lower surface of the upper cover of the case 10, the lower surface of the insulating member 91 contacts the upper surface of the heat conductive member 102, and the lower surface of the heat conductive member 102 contacts the a-wire conductive member 860 (e.g., the upper surface of the first a-wire conductive member 176).

As shown in fig. 3, in some embodiments, the insulating member 91 has the same cross-sectional shape as the heat conductive member 102. For example, in the projection in the up-down direction, the insulating member 91 has the same shape as the heat conducting member 102 and has substantially the same shape as the first a-wire conductive member 176, and the three members are disposed in a matching manner, so that the effects of effective heat dissipation, effective insulation, and material saving can be achieved.

The following describes the configuration of the positive electrode circuit path at the time of boost charging in the controller 800.

Referring to fig. 2 and 3, a charging positive electrode wire is connected to a second end of the winding 701 through the first contactor 122. A second conductive element 806 is provided in the controller 800, the second conductive element 806 including the first contactor 122, a first end of the second conductive element 806 being provided at the charging socket 115 for connecting to a positive pole of a charging device, a second end of the second conductive element 806 being connected to a second end of the at least one phase winding 701. In some embodiments, a second end of the second conductive component 806 is connected to a second end of the three-phase winding 701.

The operation principle of the first contactor 122 will be described with reference to fig. 11. The first contactor 122 is provided with a contactor first contact 621 and a contactor second contact 622, and a moving plate 624 that communicates or disconnects the contactor first contact 621 and the contactor second contact 622. Specifically, contacts 621 and 622 are exposed at the surface of contactor 122, and extend to the interior of contactor 122 through respective posts 623A and 623B, respectively. The magnet 629 is disposed apart from the coil 628 in the moving direction DM. The coil 628, the connecting shaft 626 and the moving plate 624 are fixedly connected together, and the three can move synchronously along the moving direction DM. The limit post 627 is a fixed part of the inside of the contactor 122, and the spring 625 is connected between the limit post 627 and the moving plate 624. When the contactor 122 is powered on, the coil 628 is electrified to generate magnetism and is attracted by the magnet 629, so that the coil 628 drives the moving plate 624 to move towards the magnet 629 along the moving direction DM through the connecting shaft 626, and the moving plate 624 contacts the binding posts 623A and 623B, thereby conducting the contacts 621 and 622. At this time, the spring 625 is stretched. After power is off, the restoring force of the spring 625 pulls the moving plate 624 away from the one of the posts 623A and 623B, causing the two contacts 621 and 622 to open, while the coil 628 returns to its original position.

In the present application, in some embodiments, the direction of movement DM of the moving plate 624 of the first contactor 122 is parallel to the axis of the wheel shaft; alternatively, the moving direction of the moving plate 624 is perpendicular to the traveling direction of the vehicle. The advantage of this is that the contact 122 can be prevented from being erroneously engaged by inertial force during the rapid acceleration/deceleration or the bump road condition of the vehicle during the driving process. Because the contactor 122 is attracted to the motor 700, if the contactor 122 is erroneously attracted, the second connecting assembly 4 is electrified, and thus, the risk of electric shock is brought to the vehicle user.

In some embodiments, the second conductive assembly 806 includes a positive conductive assembly 850, the first contactor 122, and an additional positive conductive assembly 865. As shown in fig. 3 and 12, the positive electrode conductive member 850 includes a positive electrode conductive member first end 851 and a positive electrode conductive member second end 852. The positive conductive member first end 851 is connected to the positive pole of the charging device and the positive conductive member second end 852 is connected to the contactor first contact 621. As shown in fig. 3 and 9, the additional positive electrode conductive member 865 includes an additional positive electrode conductive member first end 866 and an additional positive electrode conductive member second end 867. An additional positive conductive element first end 866 is connected to the second end of the at least one phase winding 701 and an additional positive conductive element second end 867 is connected to the contactor second contact 622.

In some embodiments, the positive electrode conductive assembly 850 includes a charging positive electrode terminal 170 and a sub-positive electrode conductive assembly 853. The charging positive terminal 170 is disposed on the charging socket 115, and is used for connecting a positive electrode of a charging device, and is a first end 851 of the positive electrode conductive component. The sub-positive conductive member 853 includes a sub-positive conductive member first end 854 and a positive conductive member second end 855. The sub-positive conductive member first end 853 is connected to the charging positive terminal 170 and the sub-positive conductive member second end 855 is connected to the contactor first contact 621, which is the positive conductive member second end 852.

As shown in fig. 12, in some embodiments, the sub-positive conductive assembly 853 includes a first positive conductive member 125 and a second positive conductive member 127. The first positive electrode conductive member 125 includes a first positive electrode conductive member first end 125A and a first positive electrode conductive member second end 125B. Wherein the first positive conductive member first end 125A is the sub-positive conductive member first end 853. The second positive conductive member 127 includes a second positive conductive member first end 127A and a second positive conductive member second end 127B. The second positive electrode conductive member first end 127A is connected to the first positive electrode conductive member second end 125A, and the second positive electrode conductive member second end 127B is the sub-positive electrode conductive member second end 855, that is, the positive electrode conductive member second end 852.

Specifically, the first positive conductive member first end 125A is connected to the charging positive terminal 170, thereby inducing a charging positive current, and the second positive conductive member second end 127B is connected to the first contactor 122.

As shown in fig. 3 and 9, the additional positive conductive component 865 includes an additional positive conductive component first end 866 and an additional positive conductive component second end 867. An additional positive conductive element first end 866 is connected to the second end of the at least one phase winding 701 and an additional positive conductive element second end 867 is connected to the contactor second contact 622.

As described previously, during boost charging, the path of the positive current multiplexes part a line 801. In this application, the path of the a-wire conductive element 860 from the a-wire conductive element second end 862 to the a-wire conductive element third end 863 forms an additional positive conductive element 865 (or, the additional positive conductive element 865 forms a path of the a-wire conductive element 860 from the a-wire conductive element second end 862 to the a-wire conductive element third end 863), wherein the a-wire conductive element second end 862 is an additional positive conductive element first end 866 and the a-wire conductive element third end 863 is an additional positive conductive element second end 867. That is, the third a-wire conductive member 123, the fourth a-wire conductive member 131, the first a-wire conductive member second end 176C, the first a-wire conductive member second end 176B, the fixing base 132, and the second a-wire conductive member 136 constitute an additional positive electrode conductive assembly 865. Alternatively, as shown in fig. 10, the third a-wire conductive member 123, the fourth a-wire conductive member 131, the fixing base 132, and the second a-wire conductive member 136 constitute an additional positive electrode conductive member 865.

It can be seen that the a-wire conductive member third end 863 of the a-wire conductive member 860 is connected to the charging positive terminal 170 through the first contactor 122 and the sub-positive conductive member 853.

Referring to fig. 2 and 3, the charging positive current is also shunted to the second capacitance 174 before passing through the first contactor 122. Therefore, the second positive conductive member 127 further includes a second positive conductive member third end 127C, and the second positive conductive member third end 127C is connected to the second capacitor positive second input terminal 72 to be connected to the positive electrode of the second capacitor 174.

As shown in fig. 3, the controller 800 further includes a second switching element 124 and a third positive electrode conductive member 128. According to the schematic diagram of fig. 2, when boost charging is not required, the first positive electrode conductive member 125 directs the charging positive electrode current to the second switching element 124. Specifically, the first positive electrode conductive member 125 further includes a first positive electrode conductive member third end 125C, and the first end of the second switching element 124 is connected to the first positive electrode conductive member third end 125C. The third positive electrode conductive member 128 includes a third positive electrode conductive member first end 128A and a third positive electrode conductive member second end 128B. Wherein the third positive electrode conductive member first end 128A is connected to the second end of the second switching element 124, and the third positive electrode conductive member second end 128B is at least indirectly connected to the positive electrode of the battery pack 600.

Specifically, the third positive conductive member second end 128B is connected to the positive connection terminal 71, and the positive connection terminal 71 is connected to the positive dc bus connection terminal 58 in an equipotential manner (e.g., a terminal of the same copper bar), so that the third positive conductive member second end 128B is connected to the dc bus connection terminal 58 and then connected to the positive electrode of the battery pack 600 through the first connection assembly 9.

In some embodiments, in the controller 800, the charged negative current trace is provided as follows.

As shown in fig. 3 and 13, the controller 800 includes a negative conductive assembly 840. The negative conductive member 840 includes a negative conductive member first end 841 and a negative conductive member second end 842. The negative conductive member first end 841 is connected to the negative electrode of the charging device and the negative conductive member second end 842 is at least indirectly connected to the negative electrode of the battery pack 600.

In some embodiments, negative conductive assembly 840 includes charging negative terminal 171 and sub-negative conductive assembly 843. The charging negative terminal 171 is disposed on the charging socket 115, and is used for connecting to a negative electrode of the charging device, and is a first end 841 of the negative electrode conductive component. The sub-negative conductive assembly 843 includes a sub-negative conductive assembly first end 844 and a sub-negative conductive assembly second end 845, the sub-negative conductive assembly first end 844 being for connection to the charging negative terminal 171, the sub-negative conductive assembly second end 845 being a negative conductive assembly second end 842.

In some embodiments, the sub-negative conductive assembly 843 includes a first negative conductive member 126 and a second negative conductive member 92. The first negative electrode conductive member 126 includes a first negative electrode conductive member first end 126A and a first negative electrode conductive member second end 126B. Wherein first negative electrode conductive member first end 126A is sub-negative electrode conductive member first end 844. The second negative electrode conductive member 92 includes a second negative electrode conductive member first end 92A and a second negative electrode conductive member second end 92B. The second negative conductive member first end 92A is connected to the first negative conductive member second end 126B, and the second negative conductive member second end 92B is the sub-negative conductive member second end 845, i.e. the negative conductive member second end 842.

Specifically, the first negative electrode conductive member first end 126A is connected to the charging negative electrode terminal 171, introducing a charging negative electrode current. The second negative electrode conductive member second end 92B is connected to the negative dc bus connection terminal 60 and then to the negative electrode of the battery pack 600 through the first connection assembly 9. The second negative electrode conductive member first end 92A is connected to the first negative electrode conductive member second end 126B by the negative electrode connection terminal 70.

The connection between the power module 83 and the first capacitor 173 and the second capacitor 174 is described below.

As shown in fig. 14, the power module 83 includes a three-phase connection terminal 84, a power module positive connection terminal 79, and a power module negative connection terminal 81. The three-phase connection terminals 84 are used to connect first ends of the three-phase windings 701, respectively. The power module positive terminal 79 is used to at least indirectly connect the positive pole (positive dc bus 807) of the battery pack 600. The power module negative terminal 81 is used to at least indirectly connect the negative electrode of the battery pack 600 (negative dc bus 808).

The first wire holder 99 of the controller 800 is connected to the motor wire holder 146 of the motor 700, so that the three-phase bridge arm 803 of the power module 83 is connected to the first end of the three-phase winding 701. The three-phase connection terminals 84 of the power module 83 are connected to the middle of the three-phase bridge legs 803 inside the power module. Inside the controller 800, the three-phase connection terminal 84 is connected to the first-wire-holder three-phase connection terminal 101 (see fig. 3) of the first wire holder 99, and is then connected to the three-phase winding 701 through the electric control three-phase wire connection terminal 147 and the motor three-phase wire connection terminal 145 of the motor wire holder 146.

As shown in fig. 3, 5, and 14, in some embodiments, the controller 800 further includes a capacitive assembly 55. The first capacitor 173, the second capacitor 174, the first fuse 134, the second fuse 135 and the third fuse 133 are all disposed in the capacitor assembly 55. The positive dc bus support 58A, the positive dc bus connection terminal 58, the a-line support 59, the negative dc bus support 60A, and the negative dc bus connection terminal 60 are also disposed in the capacitor assembly 55. The positive electrode connection terminal 71 and the negative electrode connection terminal 70 are also provided in the capacitor assembly 55.

As shown in fig. 14-17, in some embodiments, the capacitive assembly 55 includes an insulating base 911 and a first capacitive core 179, the first capacitive core 179 being mounted on the insulating base 911. The first capacitor core 179 is a core of the first capacitor 173. An a-wire support 59 is provided on the insulating base 911. As previously described, the A-wire support is at least for supporting the first end 176A of the first A-wire conductor segment. In some embodiments, the a-wire support location 59 is also used to mount (connect) the first a-wire connection terminal 811 of the first connection assembly 9.

In some embodiments, the capacitive assembly 55 further includes a second capacitive core 181, the second capacitive core 181 being mounted on the insulating base 911, the second capacitive core 181 being a core of the second capacitor 174.

In some embodiments, capacitor assembly 55 further includes positive dc bus support 58A and negative dc bus support 60A as previously described. The positive dc bus connection terminal 58 is located at the positive dc bus support 58A for connecting to the first positive dc bus connection terminal 821, and the negative dc bus connection terminal 60 is located at the positive dc bus support 58A for connecting to the first negative dc bus connection terminal 831. In some embodiments, the positive dc bus support 58, A, A line support 59 and the negative dc bus support 60A are juxtaposed to facilitate connection to the first connection assembly 9. In some embodiments the a-line support location 59 is intermediate the positive dc bus support location 58A and the negative dc bus support location 59A. In some embodiments, the a-wire support 59, the positive dc bus support 58A, and the negative dc bus support 60A are disposed proximate to the first socket 809 (i.e., the first socket 810), which facilitates improved integration of the controller 800.

In some embodiments, capacitive assembly 55 further includes a first capacitive positive conductive pad 901 and a capacitive negative conductive pad 905.

In some embodiments, the capacitive assembly 55 further includes a second capacitive positive conductive tab 903, the second capacitive positive conductive tab 903 being configured to connect with the first capacitive positive conductive tab 901, including a second capacitive positive conductive tab body 904, and a positive dc bus connection terminal 58 and a positive connection terminal 71 extending from the second capacitive positive conductive tab body 904. Therefore, the second capacitor positive electrode conductive sheet 903 is equipotential with the positive electrode dc bus as a whole. As described above, the positive electrode connection terminal 71 is used to connect, at least indirectly, the positive electrode of the charging device. The second capacitor positive electrode conductive sheet body 904 is connected to the positive electrode terminal of the second capacitor core 181.

In some embodiments, the first capacitive positive conductive pad 901 includes a first capacitive positive input terminal 67, a capacitive positive output terminal 77, and a first capacitive positive conductive pad body 902 located between the first capacitive positive input terminal 67 and the capacitive positive output terminal 77. The first capacitive positive plate body 902 is connected to the positive terminal of the first capacitive core 179.

In some embodiments, the second capacitive positive conductive pad 903 further includes a first relief terminal 62 connected to the second capacitive positive conductive pad body 904. A first terminal of the first fuse 134 is connected to the first fuse connection terminal 62 and a second terminal of the first fuse 134 is connected to the first capacitor positive input terminal 67. Thus, the positive dc bus current is introduced from the second capacitor positive conductive plate 903, passes through the first protection 134, and enters the first capacitor 173. In some embodiments, the first fuse terminal 62 and the first capacitive positive input terminal 67 are located on a first side of the first capacitive core 179.

In some embodiments, the second capacitive positive conductive pad 903 further includes a second safety terminal 63 connected to the second capacitive positive conductive pad body 904. The insulating base 911 is also provided with a second safety output terminal 66. The first terminal of the second fuse 135 is connected to the second fuse connection terminal 63, and the second terminal of the second fuse 135 is connected to the second fuse output terminal 66. In some embodiments, the second fuse connection 63 and the second fuse output 66 are located on a first side of the first capacitive core 179. In some embodiments, the second safety terminal 63 and the first safety terminal 62 are located on a first side of the second capacitive positive plate body 904.

In some embodiments, capacitive negative conductive pad 905 includes capacitive negative input terminal 68, capacitive negative output terminal 75, and capacitive negative conductive pad body 906 between capacitive negative input terminal 68 and capacitive negative output terminal 75. In some embodiments, the capacitive negative conductive tab body 906 connects the negative terminal of the first capacitive core 179 and the negative terminal of the second capacitive core 181 such that the first capacitive 173 and the second capacitive 174 share a negative copper bar, i.e., the negative terminal of the second capacitive core 181 is connected to the negative terminal of the first capacitive core 179. In some embodiments, a first terminal of the third fuse 133 is connected to the negative dc bus connection terminal 60 and a second terminal of the third fuse 133 is connected to the capacitive negative input terminal 68. So that the negative dc bus current passes through the third fuse 133 and then enters the first capacitor 173 and the second capacitor 174. In some embodiments, negative dc bus connection terminal 60 and capacitive negative input terminal 68 are on the same side of first capacitive core 179.

In some embodiments, the capacitive assembly 55 further includes a second capacitive positive input terminal 72, the second capacitive positive input terminal 72 being connected to the positive terminal of the second capacitive core 181. Meanwhile, as previously described, the second capacitive positive input terminal 72 is also used to connect the first end of the first switching element 122.

In some embodiments, the capacitive negative output terminal 75 and the capacitive positive output terminal 77 are used to connect with the power module 83. In some embodiments, the capacitive negative output terminal 75 and the capacitive positive output terminal 77 are located on a second side of the first capacitive core 179. In some embodiments, a capacitive insulator 76 is disposed between the capacitive negative output terminal 75 and the capacitive positive output terminal 77. In some embodiments, the capacitive negative conductive tab body 906 and the first capacitive positive conductive tab body 902 are disposed generally parallel to each other, e.g., both disposed parallel to a first plane. The capacitive negative output terminal 75 and the capacitive positive output terminal 77 are also disposed parallel to the first plane. The capacitive insulator 76 is located between the capacitive negative output terminal 75 and the capacitive positive output terminal 77 in a direction perpendicular to the first plane. In some embodiments, the capacitive insulator 76 is made of a plastic material. For example, the capacitive insulator 76 is constructed as a plastic sheet.

As shown in fig. 14, in some embodiments, the power module positive terminal 79 is configured to connect with the capacitive positive output terminal 77, and thus to the positive dc bus terminal 58, i.e., the positive dc bus, via the first capacitive positive conductive tab 901 and the first fuse 134. Thus, the positive dc bus connection 58 is at least indirectly connected to the power module positive connection 79. One end of the first capacitive positive conductive plate 901 is connected to the power module positive terminal 79, and the other end of the first capacitive positive conductive plate 901 is for at least indirectly connecting to the positive electrode of the battery pack 600. The power module negative terminal 81 is used to connect with the capacitor negative output terminal 75 so as to pass through. The capacitor negative conductive tab 905 and the third fuse 133 are connected to the negative dc bus connection terminal 60, i.e., the negative dc bus. Thus, the negative dc bus connection 60 is at least indirectly connected to the power module negative connection 79. One end of the capacitive negative conductive plate 905 is connected to the power module negative terminal 81, and the other end of the capacitive negative conductive plate 905 is configured to be at least indirectly connected to the negative electrode of the battery pack 600. In some embodiments, the power module positive terminal 79 and the power module negative terminal 81 are on the same side of the power module 83.

In some embodiments, as shown in fig. 18, the power module positive terminal 79 and the capacitor positive terminal 77 are connected in overlapping (contact) with each other in the overlapping direction DD. The bridging direction DD is a direction perpendicular to the contact surface between the positive power module connection terminal 79 and the positive capacitor output terminal 77 (i.e., perpendicular to the first plane). In some embodiments, the power module positive terminal 79 and the capacitor positive output terminal 77 are overlapped and welded to each other. The power module positive connection terminal 79 includes three sub-power module positive connection terminals 79A respectively connected to the first ends (upper bridges 804) of the three-phase bridge arms 803, and the capacitor positive output terminal 77 is in overlapping connection with the three sub-power module positive connection terminals 79A, so that the three sub-power module positive connection terminals 79A are connected together at the input ends.

In some embodiments, as shown in fig. 14 and 18, the controller 800 further includes a conductive connection tab 56, one end of the conductive connection tab 56 is used to connect with the power module negative terminal 81, and the other end of the conductive connection tab 56 is used to connect with the capacitor negative output terminal 75, thereby connecting the power module negative terminal 81 with the capacitor negative output terminal 75. For example, one end of the conductive tab 56 is lapped to the power module negative terminal 81 in the lap direction DD, and the other end of the conductive tab 56 is lapped to the capacitor negative output terminal 75 in the lap direction DD. Similarly, the power module negative terminal 81 includes three sub-power module negative terminals 81A connected to the second ends (lower bridges 805) of the three-phase bridge arms 803, respectively, and the conductive connecting piece 56 is lap-connected to each of the three sub-power module negative terminals 81A. In some embodiments, one end of the conductive connecting piece 56 for bridging the power module negative terminal 81 is configured with three bridging locations 56A spaced apart from each other, each bridging location 56A bridging one of the sub power module negative terminals 81A. In some embodiments, the conductive tabs 56 are welded, e.g., lap-welded, to the power module negative terminal 81. The conductive tab 56 is welded, for example, laminated and welded, to the negative output terminal 75 of the capacitor.

As shown in fig. 18, the power module positive terminal 79 exceeds (is longer than) the power module negative terminal 81 in the alternating direction DC. The capacitor positive output terminal 77 exceeds (is longer than) the capacitor negative output terminal 75 in the staggered direction DC. The power module positive electrode connection terminal 79 and the capacitor positive electrode output terminal 77 are stacked in the lap joint direction DD and are staggered with each other in the stagger direction DC. The overlapping direction DD is perpendicular to the first plane, and the overlapping direction DD is a bidirectional direction and includes a first overlapping direction DD1 and a second overlapping direction DD2 opposite to each other. The power module positive connection terminal 79 is located at a side of the power module negative connection terminal 81 facing the first bridging direction DD1 and is spaced apart from the power module negative connection terminal 81 along the bridging direction DD. The capacitor positive output terminal 77 is located on a side of the capacitor negative output terminal 75 facing the first bridging direction DD1 and is spaced apart from the capacitor negative output terminal 75 along the bridging direction DD. The conductive connecting piece 56 is laminated and overlapped to the power module negative electrode connection terminal 81 on the side of the power module negative electrode connection terminal 81 facing the second lapping direction DD2, and is laminated and overlapped to the capacitor negative electrode output terminal 75 on the side of the capacitor negative electrode output terminal 75 facing the second lapping direction DD2.

In some embodiments, the power module positive terminal 79 and the power module negative terminal 81 are parallel to each other, e.g., also disposed parallel to the first plane. A power module insulating member 80 is disposed between the power module positive terminal 79 and the power module negative terminal 81, and the power module insulating member 80 is located between the power module positive terminal 79 and the power module negative terminal 81 along the lap joint direction DD.

In some embodiments, power module insulator 80 is configured to bend toward the second overlap direction and beyond power module negative terminal 81 in second overlap direction DD 2. Similarly, the capacitive insulator 56 may also be configured to bend toward the second bridging direction and beyond the capacitive negative output terminal 75 in the second bridging direction. In some embodiments, the middle portion of the conductive connection pad 56 in the crossover direction DC is configured to be recessed toward the second crossover direction DD2, and both sides (or both ends) of the conductive connection pad 56 in the crossover direction DC are respectively overlapped to the power module negative connection terminal 81 and the capacitor negative output terminal 75.

In some embodiments, the power module negative terminal 81 or the capacitor negative output terminal 75 is provided with a first positioning member 82 and the conductive tab 56 is provided with a second positioning member 57. The first positioning member 82 is disposed and connected in correspondence with the second positioning member 57 such that, after the conductive connecting piece 56 is laminated and lapped to one of the power module negative electrode connection terminal 81 and the capacitor negative electrode output terminal 75 in which the first positioning member 82 is disposed, the conductive connecting piece 56 is immovable with respect to the one in a direction perpendicular to the lapping direction DD, so that the welding accuracy of the conductive connecting piece 56 and the one can be ensured.

In some embodiments, the mounting positions of the power module 83 and the capacitor assembly 55 are respectively disposed in the case 10, and by design, after the power module 83 and the capacitor assembly 55 are mounted in the case 10, the power module positive terminal 79 and the capacitor positive output terminal 77 form a relative position overlapping each other, and the relative position can be stably maintained under the limit effect of the respective mounting positions. At this time, the power module positive electrode connection terminal 79 and the capacitor positive electrode output terminal 77 may be welded. Then, the conductive connection piece 56 is welded to the power module negative electrode connection terminal 81 and the capacitor negative electrode output terminal 75, and the first positioning member 82 and the second positioning member 57 are used for keeping the conductive connection piece 56 in a stable relative position with respect to the power module negative electrode connection terminal 81 and the capacitor negative electrode output terminal 75, so as to ensure welding accuracy. In the present application, laser welding is used, for example, so that the welding accuracy and the safety of the welding process can be improved.

In some embodiments, the first positioning member 82 may also be provided to both the power module negative electrode connection terminal 81 and the capacitor negative electrode output terminal 75 at the same time, so that after the conductive connection sheet 56 is overlapped to the power module negative electrode connection terminal 81 and the capacitor negative electrode output terminal 75, it is not movable with respect to both in a direction perpendicular to the overlapped direction.

In some embodiments, the first positioning member 82 includes at least two first positioning sub-members and the second positioning member 57 includes at least two second positioning sub-members that are disposed in correspondence with and connected to the first positioning sub-members such that the conductive connecting tab 56 is non-rotatable with respect to the power module negative terminal 81 and the capacitor negative output terminal 75. In some embodiments, one of the first positioning member 82 and the second positioning member 57 is provided as a projection, and the other of the first positioning member 82 and the second positioning member 57 is provided as a recess or a through hole for accommodating the projection.

In the embodiment not shown in the present application, compared with the illustrated embodiment, the difference is that the arrangement mode of the capacitor negative electrode output terminal 75 and the capacitor positive electrode output terminal 77 is opposite (the arrangement mode is reversed) and the arrangement mode of the power module positive electrode connection terminal 79 and the power module negative electrode connection terminal 81 is opposite (the arrangement mode is reversed), the capacitor negative electrode output terminal 75 and the power module negative electrode connection terminal 81 are directly overlapped and welded, and the capacitor positive electrode output terminal 77 and the power module positive electrode connection terminal 79 are connected through the conductive connection sheet 56.

In some embodiments, the power module 83 includes a first power module terminal that is one of the power module positive terminal 79 and the power module negative terminal 81 and a second power module terminal that is the other of the power module positive terminal 79 and the power module negative terminal 81. The first power module terminal is connected to one end of the three-phase bridge arm 803, and the second power module terminal is connected to the other end of the three-phase bridge arm 803. In some embodiments, the first power module terminal and the second power module terminal are located on the same side of the power module 83.

In some embodiments, the capacitor assembly 55 includes a first capacitor terminal for corresponding to and connecting with the first power module terminal (the first capacitor terminal being the capacitor positive output terminal 77 when the first power module terminal is the power module positive terminal 79; the first capacitor terminal being the capacitor negative output terminal 75 when the first power module terminal is the power module negative terminal 81) and a second capacitor terminal for corresponding to and connecting with the second power module terminal (the second capacitor terminal being the capacitor positive output terminal 77 when the second power module terminal is the power module positive terminal 79; the second capacitor terminal being the capacitor negative output terminal 75 when the second power module terminal is the power module negative terminal 81). In some embodiments, the first capacitive terminal and the second capacitive terminal are located on the same side of the capacitive assembly 55. In some embodiments, the first power module terminal is directly lapped and welded to the first capacitive terminal and the second power module terminal is connected to the second capacitive terminal by a conductive tab 56.

According to the controller, the A-wire conductive assembly is arranged in the box body, the second end of the motor winding is connected with the middle of the first sub-battery pack and the middle of the second sub-battery pack which are connected in series, and the heating function of the battery is achieved. Further, boost charging is achieved by multiplexing the motor windings and part of the a-wire conductive assembly. The controller has reasonable structure and stable performance. It will be appreciated that the electric assembly, drive system and vehicle according to the present application include all of the features and effects of the controller according to the present application.

The processes, steps described in all the preferred embodiments described above are examples only. Unless adverse effects occur, various processing operations may be performed in an order different from that of the above-described flow. The step sequence of the above-mentioned flow can also be added, combined or deleted according to the actual requirement.

In understanding the scope of the present application, the term "comprising" and its derivatives, as used herein, are intended to be open ended terms that specify the presence of the stated features, elements, components, groups, integers, and/or steps, but do not exclude the presence of other unstated features, elements, components, groups, integers and/or steps. This concept also applies to words having similar meanings such as the terms "including", "having" and their derivatives.

The terms "attached" or "attached" as used herein include: a construction in which an element is directly secured to another element by directly securing the element to the other element; a configuration for indirectly securing an element to another element by securing the element to an intermediate member, which in turn is secured to the other element; and the construction in which one element is integral with another element, i.e., one element is substantially part of the other element. The definition also applies to words having similar meanings such as the terms, "connected," "coupled," "mounted," "adhered," "secured" and their derivatives. Finally, terms of degree such as "substantially", "about" and "approximately" as used herein mean a deviation of the modified term such that the end result is not significantly changed.

Unless defined otherwise, technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing particular implementations only and is not intended to be limiting of the present application. Features described herein in one embodiment may be applied to another embodiment alone or in combination with other features unless the features are not applicable or otherwise indicated in the other embodiment.

The present application has been illustrated by the above embodiments, but it should be understood that the above embodiments are for the purpose of illustration and description only and are not intended to limit the present application to the embodiments described. Further, it will be understood by those skilled in the art that the present application is not limited to the above-described embodiments, and that many variations and modifications are possible in light of the teachings of the present application, which fall within the scope of what is claimed herein.

Claims

1. A controller, the controller comprising:

a power module, the power module comprising:

a first power module terminal (79) for connecting to a first pole of a battery pack, and

A second power module terminal (81) for connecting to a second pole of the battery pack, one of the first pole and the second pole being a positive pole of the battery pack, the other being a negative pole of the battery pack;

a capacitive assembly comprising:

a first capacitor terminal (77) for connection to the first power module terminal, and

a second capacitive terminal (75) for connection with the second power module terminal;

a first positioning member (82) provided to the second power module terminal and/or the second capacitance terminal; and

a conductive tab (56) having one end for connection with the second power module terminal and the other end for connection with the second capacitor terminal, the conductive tab including a second positioning member (57),

2. The controller of claim 1, wherein one end of the conductive tab is configured to overlap the second power module terminal in an overlapping direction, and the other end of the conductive tab is configured to overlap the second capacitor terminal in the overlapping direction, the overlapping direction being perpendicular to a contact surface of the conductive tab with the second power module terminal.

3. The controller of claim 1, wherein one end of the conductive tab is adapted for solder connection with the second power module terminal and the other end of the conductive tab is adapted for solder connection with the second capacitor terminal.

4. The controller according to claim 1, wherein,

5. The controller according to claim 1, wherein,

6. A controller according to claim 3, wherein one end of the conductive tab is laser welded to the second power module terminal and the other end of the conductive tab is laser welded to the second capacitor terminal.

7. The controller according to claim 1, wherein,

the first power module terminal (79) is connected to one end of the three-phase bridge arm, the second power module terminal (81) is connected to the other end of the three-phase bridge arm,

the second power module terminal comprises three sub second power module terminals (81A) which are respectively connected to the other ends of the three-phase bridge arms, and the conductive connecting sheet and the three sub second power module terminals are overlapped and connected in a welding mode.

8. The controller according to any one of claims 1 to 7, wherein the first power module terminal and the first capacitance terminal are overlapped and welded to each other in an overlapping direction perpendicular to a contact surface of the conductive connecting piece and the second power module terminal.

9. The controller according to claim 8, wherein,

The first power module terminal comprises three sub first power module terminals (79A) which are respectively connected to one ends of the three-phase bridge arms, and the first capacitor terminal and the three sub first power module terminals are all in stacked lap joint connection.

10. The controller according to claim 8, wherein,

11. The controller of claim 10, wherein a power module insulator (80) is disposed between the first power module terminal and the second power module terminal, the power module insulator being located between the first power module terminal and the second power module terminal along the overlap direction.

12. The controller of claim 11, wherein the power module insulation is made of a plastic material.

13. The controller according to claim 11, wherein,

the power module insulator is configured to bend toward the second lap direction and beyond the second power module terminal in the second lap direction,

14. The controller of claim 10, wherein a capacitive insulator (76) is disposed between the first and second capacitive terminals, the capacitive insulator being located between the first and second capacitive terminals along the crossover direction.

15. The controller of claim 14, wherein the capacitive insulator is made of a plastic material.

16. The controller of claim 14, wherein the controller is configured to,

the capacitive insulator is configured to bend toward the second overlap direction and beyond the second capacitive terminal in the second overlap direction,

17. An electric assembly, comprising:

a motor comprising a three-phase winding; and

the controller of any one of claims 1-16, the power module comprising three-phase legs, midpoints of each phase of the legs being respectively for at least indirectly connecting a first end of one phase of the winding of the motor.

18. A drive system, comprising:

a battery pack for supplying power; and

the electric assembly of claim 17,

19. A vehicle comprising a drive system according to claim 18, wherein the electric machine is connected to a wheel of the vehicle.